Răspuns :
Răspuns:
a+b=25
a-b=5=> a=5+b
=>5+b+b=25
=>2b+5=25
=>2b=20
=>b=10
a+10=25=>a=25-10=15
Răspuns:
[tex]a+b=25\\\\a-b=5\\\\a+b+a-b=25+5\\\\2a=30= > a=30:2= > a=15\\\\b=25-15= > b=10[/tex]
Răspuns:
a+b=25
a-b=5=> a=5+b
=>5+b+b=25
=>2b+5=25
=>2b=20
=>b=10
a+10=25=>a=25-10=15
Răspuns:
[tex]a+b=25\\\\a-b=5\\\\a+b+a-b=25+5\\\\2a=30= > a=30:2= > a=15\\\\b=25-15= > b=10[/tex]